These were the highest wait times I saw the last time I was in the parks (had to be there Sunday and Monday all day for TNA Wrestling and I went for a few hours on Tuesday):
USF:
Jimmy Neutron's Nicktoon Blast - 70 minutes
Revenge of the Mummy - 60 minutes
Men in Black Alien Attack - 60 minutes
Back to the Future The Ride - 35 minutes
Jaws - 35 minutes
Shrek 4-D - 30 minutes
Twister - 20 minutes
IOA:
Dudley Do-Right's Ripsaw Falls - 60 minutes
The Amazing Adventures of Spider-Man - 45 minutes
Popeye and Bluto's Bilge Rat Barges - 45 minutes
Jurassic Park River Adventure - 45 minutes
The High in the Sky Seuss Trolley Train Ride - 45 minutes
The Cat in the Hat - 35 minutes
Incredible Hulk Coaster - 30 minutes
Dueling Dragons - 10 minutes
Wait times were nearly double of the ones posted on some of the attractions during the 4th of July week, which was the last time I was around before these three days.
In terms of people and the parking garages, it's been quite busy, I'd say.